From: Sergei Shtylyov <sshtylyov@mvista.com>
To: Robert Hancock <hancockrwd@gmail.com>
Cc: "Ortwin Glück" <odi@odi.ch>, "Tejun Heo" <tj@kernel.org>,
linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org
Subject: Re: ata link not reset properly
Date: Sun, 27 Jun 2010 22:27:32 +0400 [thread overview]
Message-ID: <4C279814.9030100@ru.mvista.com> (raw)
In-Reply-To: <4C257CEE.2070309@gmail.com>
Hello.
Robert Hancock wrote:
>> On 25.06.2010 17:19, Tejun Heo wrote:
>>> Patch attached, but please see below.
>> Cheers, I will give it a try and provide feedback if "it" happens again.
>>> Is it PATA?
>> Yes. This chipset doesn't have SATA, only PATA.
> Ahh, ok, it's not sata_nv at all then, it's pata_amd. On the same chip,
> totally different controller though.
> PATA doesn't normally use hard-resets as a means of error recovery -
> that would mean hitting the RESET line, which I don't think most
> controllers can do on software command (it usually only gets asserted on
> power up or hitting the reset button), unlike on SATA where there's a
> defined way to trigger a COMRESET which is mostly equivalent. Also, that
> resets both devices on the channel, unlike soft reset which is specific
> to one device.
PATA soft reset affects both devices too. Unless you mean ATAPI Device
Reset command.
MBR, Sergei
prev parent reply other threads:[~2010-06-27 18:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-23 17:08 ata link not reset properly Ortwin Glück
2010-06-23 17:28 ` Tejun Heo
2010-06-23 17:31 ` Tejun Heo
2010-06-24 7:13 ` Ortwin Glück
2010-06-25 15:19 ` Tejun Heo
2010-06-25 18:00 ` Ortwin Glück
2010-06-26 4:07 ` Robert Hancock
2010-06-26 8:03 ` Tejun Heo
2010-06-26 9:00 ` Ortwin Glück
2010-06-27 18:27 ` Sergei Shtylyov [this message]
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